• ASTM C450 = Practice for Prefabrication and Field Fabrication of Thermal Insulating Fitting Covers for NPS Piping, Vessel Lagging, and Dished Head Segments
• ASTM C585 = Practice for Inner and Outer Diameters of Rigid Thermal Insulation for Nominal Sizes of Pipe and Tubing (NPS System)

• ASTM C533 = Specification for Calcium Silicate Block Pipe Thermal Insulation
• ASTM C534 = Specification for Preformed Flexible Elastomeric Cellular Thermal Insulation in Sheet and Tubular Form
• ASTM C547 = Specification for Mineral Fiber Prefromed Pipe Insulation
• ASTM C552 = Specification for Cellular Glass Thermal Insulation
• ASTM C578 = Specification for Preformed Cellular Polystyrene Thermal Insulation
• ASTM C591 = Specification for Unfaced Preformed Rigid Cellular Polyurethane Thermal Insulation
• ASTM C610 = Specification for Expanded Perlite Block and Pipe Thermal Insulation
• ASTM C612 = Specification for Mineral Fiber Block and Board Thermal Insulation

Complete ASTM Specifications may be purchased through http://wwwASTM.org
.